The screen glowed in the dark room, the Tumblr dashboard scrolling with post after post of padded men on their knees, locked in chastity, faces pressed to the floor while thick diapers sagged between their thighs. Marcus had followed the account for months, the one that called itself MasterKinkTumblr, where the captions always ended the same way: “You will wear what I choose. You will obey without question. Your body is no longer yours.”
He messaged once, then twice, then every night. The replies came slow, deliberate, each one tightening an invisible collar around his throat. “Send proof you bought the diapers. Send a photo of yourself locked. Then we begin.”
Three weeks later Marcus stood in the doorway of a concrete loft, naked except for the thick white diaper already taped around his hips and the steel cage crushing his cock inside it. The door locked behind him with a sound that echoed like finality. Master waited in the center of the room, shirtless, leather pants low on his hips, a length of chain coiled in one fist.
“On your knees. Crawl.”
Marcus dropped. The diaper crinkled loudly with every movement, the bulk forcing his thighs apart. By the time he reached Master’s boots the humiliation already burned hot in his chest, mixing with something darker and needier.
Master clipped the chain to the ring on the front of the diaper. “This is your leash now. You don’t stand unless I allow it. You don’t speak unless I ask. Your mouth is for service, your ass is for use, and that padded cunt between your legs is mine to fill and change when I decide you’ve earned it.”
He tugged. The chain pulled the front of the diaper tight against Marcus’s cage, forcing a whimper out of him. Master smiled, cold and satisfied.
“First rule: you will use the diaper. No asking. No warning. You will piss and shit when your body demands it and you will thank me for letting you stay padded. Second rule: every time that diaper is changed, you will suck whatever I give you while I do it. Third rule: you belong to this account now. Every photo, every video, every filthy caption is your new life.”
Marcus’s cock tried to swell inside the cage and failed. The pressure made his eyes water. Master noticed and pressed a boot against the front of the diaper, grinding down until Marcus moaned.
“Already leaking. Good boy.”
The first week was nothing but training. Marcus learned to crawl with the chain dragging, learned to present his padded ass for inspection, learned to open his mouth on command and swallow Master’s cock while a fresh diaper was taped around him. Each time the tapes ripped open, the smell of his own piss and the slick mess inside hit him like another layer of ownership.
Master would smear the mess over his hole, work two thick fingers inside, then replace them with his cock while the half-soiled diaper hung around Marcus’s thighs.
“Say it,” Master growled one night, balls deep, one hand fisting the back of the diaper like a handle. “Tell the camera what you are.”
Marcus looked straight into the lens of the phone propped on the table. His voice came out hoarse. “I’m Master’s gay sex slave. I live in diapers. I cum only when he allows it. My Tumblr is my confession.”
The post went live that same night. Within hours the notes climbed into the thousands. Strangers reblogged it with comments like “wish that was me” and “more changing vids please.” Master read every one aloud while Marcus knelt between his legs, sucking slowly, the heavy, warm diaper sagging lower with every swallow.
Punishment came when Marcus hesitated. Once, when Master ordered him to piss standing in the corner while the camera recorded, Marcus froze. The chain yanked him forward so hard he stumbled. Master bent him over the bench, ripped the tapes open, and caned the bare skin above the cage until Marcus sobbed and the piss finally came, splattering the floor and his own feet. Then Master shoved the soiled diaper back between his legs, taped it cruelly tight, and made him sit in the mess while he fucked his mouth again.
“You don’t get to decide when you obey,” Master said, voice low and even. “You only get to feel the consequences.”
By the second month Marcus no longer recognized the man in the mirror. His body stayed in nothing but diapers and restraints. His cock stayed locked. His ass stayed plugged or freshly fucked. Every morning Master posted a new photo: Marcus on all fours with a fresh diaper being filled, Marcus sucking while his cage dripped through the padding, Marcus chained to the wall with a bulging, leaking diaper and tear-streaked cheeks.
The final post was different. No caption, just a video. Marcus on his back, legs spread and held open by leather straps, a fresh diaper already taped on but already darkening at the front. Master’s voice off-camera: “Tell them who owns you.”
Marcus looked into the lens, eyes glassy, voice steady for the first time in weeks. “You do, Sir. Tumblr knows. Everyone knows. I’m your diapered gay sex slave and I’m never coming off this account.”
Master’s hand appeared in frame, pressing down on the front of the diaper until Marcus gasped and the plastic crackled. The video ended on that sound.
The comments flooded in. Marcus never saw them. He was already on his knees again, chain taut, mouth open, waiting for whatever came next. The loft door stayed locked. The diapers kept coming. And every night the phone recorded another piece of him disappearing into the power that now held every inch of his body.
